//
//  Utils.cs
//
//  Author:
//       balazs4 <balazs4web@gmail.com>
//
//  Copyright (c) 2013 
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
using System;
using System.Linq;
using System.Diagnostics;


namespace SongTagger.Core
{
    internal class PerformanceTrace : IDisposable
    {
        protected bool disposed = false;
        private Stopwatch watcher;
        private Stopwatch snapshot;
        private string actionName;

        public PerformanceTrace(string action)
        {
            actionName = action;
            watcher = new Stopwatch();
            WriteStartTrace();
            watcher.Start();
            snapshot = Stopwatch.StartNew();
        }

        public void WriteTrace(string currentstep)
        {
            Trace.TraceInformation(@" + {0}...{1}", currentstep, snapshot.Elapsed.ToString());
            snapshot.Restart();
        }

        private void WriteStartTrace()
        {
            Trace.TraceInformation("[{0}] {1}", "START", actionName);
        }

        private void WriteStopTrace()
        {
            Trace.TraceInformation("[{0}] {1}...{2}", "STOP", actionName, watcher.Elapsed.ToString());
        }

        protected virtual void Dispose(bool disposing)
        {
            if (disposed)
                return;

            watcher.Stop();
            WriteStopTrace();
            disposed = true;
        }

        ~ PerformanceTrace()
        {
            Dispose(false);
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }
    }
}

